Operation with Advanced Microprocessor Controls

Table 2 lists the setup functions, their factory default values and the allowable programming ranges.

Table 2

Setup functions, default values and ranges

 

Function

Default

Range

Cold Start Time Delay*

3

0 to 3 min (0 = no delay)

Restart Time Delay

0.1

0 to 9.9 min (0 = manual restart)

Infrared Fill Rate

150

110 to 500%

Chilled/Hot Water Coil Flush

24

0 to 99 hrs (also Econ-O-Coil)

C/F Degrees

F

C or F

*Factory set to 0 for water cooled, glycol, and GLYCOOL units.

Select Options

The following table lists options which should match the options installed with your unit and should not need to be changed during normal operation.

Table 3

Unit options

 

 

Option

Selection

Heating1

 

Yes or No

Humidifier

 

Yes or No

Dehumidifier

Yes or No

Hot Gas Reheat2

Yes or No

Heat Stages3

2

1Heating cannot be disabled on units with SCR reheats. 2Hot gas reheat not available on units with SCR reheats. 3Heat stages not selectable on units with SCR reheats.

Calibrate Sensors

The temperature and humidity sensors can be calibrated by selecting this menu item. “SENSOR” shows the actual sensor reading or raw reading. “CALIBRATED” shows the sensor reading after the calibration offset has been added. The temperature sensor can be calibrated ±5 degrees Fahrenheit and the humidity sensor can be calibrated ±10%RH. When calibrating the humidity sensor, the value shown will always be % RH, even though absolute humidity control may be selected. If absolute humidity control is selected, the Normal Status Display will display the adjusted reading and may not agree with the relative humidity reading displayed while in calibration.

Show DIP Switches

The DIP switch settings can be reviewed from the display panel. Changing the DIP switches requires opening the upper panel for access to the DIP switches on the microprocessor control board.

NOTE

Power MUST be cycled OFF, then ON from the unit disconnect switch for the control system to update the DIP switch settings (with the exception of switch 8).

Table 4

DIP switch settings

 

 

 

 

 

Switch #

 

Off

On

1

 

No Part Coil

Part Coil/Chilled Water

2

 

Electric/Hot Gas Reheat

Hot Water Reheat

3

 

All

Not Used

4

 

No GLYCOOL

GLYCOOL

5

 

No Dual Cooling

Dual Cooling

6

 

Not Used

Not Used

7a

 

Tight Control

Standard Control

aSCR reheats only (with special software); otherwise, not used.

The selections shown in Table 4 should match options installed on your unit and should not need to change during normal operation. Switches 1 through 7 are self explanatory. DIP switch 8, not shown in the table, enables the password feature when set to ON and disables the password feature when set to OFF.

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Liebert 3000 manual Select Options, Calibrate Sensors, Show DIP Switches

3000 specifications

The Liebert 3000 is a cutting-edge power protection solution designed to provide reliable and efficient backup power for critical applications. This uninterruptible power supply (UPS) system is engineered to safeguard sensitive electronic equipment from power disturbances, ensuring uninterrupted operations in data centers, telecommunications, and industrial environments.

One of the standout features of the Liebert 3000 is its high-efficiency design. With an efficiency rating of up to 94%, the system minimizes energy loss, resulting in lower operational costs and a reduced carbon footprint. This is particularly important in today's environmentally conscious climate, as organizations strive to meet sustainability goals while maintaining top-tier performance.

The Liebert 3000 employs advanced technologies to enhance its functionality. It incorporates online double-conversion technology, which provides a continuous supply of clean and regulated power. This technology ensures that connected loads receive stable voltage and frequency, shielding them from voltage spikes, sags, and outages. Additionally, the UPS offers features such as automatic battery testing, which helps ensure peak battery performance and reliability.

Another key characteristic of the Liebert 3000 is its modular design, allowing for flexible scalability. This means that organizations can easily expand the capacity of their UPS system as their power needs grow, without the need for extensive system overhauls. The modular architecture also facilitates simplified maintenance and reduces downtime, as individual modules can be serviced without interrupting power to the critical load.

The system is equipped with comprehensive monitoring and management capabilities. The Liebert 3000 provides real-time data on power usage, battery status, and system performance, enabling facility managers to make informed decisions and proactively address potential issues. The integration of remote management tools allows for seamless monitoring from anywhere, providing peace of mind for operators.

Overall, the Liebert 3000 combines high efficiency, advanced technology, and flexible design to deliver a robust power protection solution. Its reliability and performance make it a preferred choice for organizations seeking to protect their critical infrastructure while enhancing operational efficiency and sustainability. As businesses continue to rely on technology for their everyday operations, the Liebert 3000 stands out as a dependable safeguard against the uncertainties of power quality.